M/S note from FL Lucas to EWT Mar 16 on threat of German attacks on British airfields...

HW 14/124

1945 Mar 16-31

M/S note from FL Lucas to EWT Mar 16 on threat of German attacks on British airfields and BP by commandos arriving in gliders; comments on distribution of forthcoming BP CX/MSS report on abbreviations Mar 16; amendments to Hut 3's publication on bombing of German land-line stations Mar 20, Hut 3 order Mar 26 on handling German plain language texts to Commands Mar 29, Hut 3 order same subject Mar 31, HS Marchant of Hut 3 to DD 1 Mar 29 on CX/MSS reporting on Allied POWs and POW camps, reports should be to very limited distribution and thus go out in the special C reporting series, suggestion passed on by DD 1 to C; DD 1 to C Mar 27 re Service and RSS search and co-operation; query from DNI to DD 3 Mar 21 asking for all available Sigint on possible future move of Japanese intelligence centre from Berlin to a neutral country in Europe; Sixta 12-page write-up Mar 31 on A. FU. LUFT ANLAGE 2, GAF sigs document for c/s change of Feb 1 1945 on allocation of c/ss and frequencies for ground/ground working, ANGLAGE 1 had been issued for air/ground frequencies; AD (WTC) to DD 1 Mar 16 re GP Domino cover; Lt Col Gadd of Sixta to AD (WTC) Mar 18 with comments on AD (WTC)'s recent paper on TA; AD (WTC) meets Mar 19 with Col Godefroy of French Sigint organisation who proposes collaboration with UK Sigint, Sayer asks for guidance from DD 1; AD (WTC) to BP Comms Officer Mar 23 re loading of Forest Moor printer links, sent on to OC Forest Moor, AD (WTC) to visit the station during following week, AD (WTC) to Comms Officer Mar 27 with statistics for traffic carried on printer links from Forest Moor; DD (Y) to EWT Mar 24 re CSO (SW) finding accommodation for ATS printer party moving from Kedleston to Knockholt, CSO (SW) to be given free access to Knockholt; Met Section reports for w.e. Mar 17, 24 and 31; case presented by AW Bonsall to DD (AS) Mar 18 for need to liaise with RSS, particularly on German Wehrwolf Organisation; Air Sigs Section to DD (AS) Mar 18 re delays on printer link from Forest Moor, 2nd link should be installed between Forest Moor and AS to eliminate such delays; Gp Capt Jones, visiting SHAEF, to Hut 3 BP Mar 23 re Ultra reporting, should be more interpretative and totalling of statistics contained in text should be done where appropriate, Gen Spaatz's briefing to BP postponed but not cancelled, details of Jones' SHAEF program, Jones at SHAEF to Marchant of Hut 3 and to DD 1 Mar 23 after talking with senior SHAEF Generals, including Spaatz, agreed that program for Allied bombing of German land-lines now of less importance to BP and SHAEF also now had more important targets, Jones to Col Taylor at BP from Wing Cdr Crawshaw at SHAEF Mar 23, Maj Gen Strong preparing signal to send all senior intelligence officers, to be agreed first by London and Washington, Marchant to Col King Douglass for Gen Macdonald Mar 24, Operation Short Circuit, the bombing of German land-lines, now to be overtaken by higher priority bombing missions, BP considers Short Circuit no longer essential to Ultra program; BP to named officers in SHAEF Mar 16 from Chairman SB with further amendment to AWL 4264, list of German Sigint sites for exploitation after capture; SHAEF Air Forward to DD (AS) Mar 16 re installation of US teletype at Det A, asks for same equipment at BP, reply from HCS Maine at HQ who advises against, AS repeats Main's recommendation to SHAEF Forward Air Mar 29; DD 1 to Brown at 1 SIC Mar 19 agreeing indoctrination of all officers at 1 SIC as requested by Brown, BP to Brown Mar 20 with tasking of low frequency transmissions not suitable for UK cover, reply Mar 22, BP again to Brown Mar 23, Brown to BP Mar 24 re tasking; Wing Cdr Crawshaw at SHAEF Main, Rheims, to BP for Col Taylor Mar 20 re future visit to US HQ and Col Bicher, wishes Taylor to accompany him; AD 2 to DD (Y) Mar 21 re printer intercept from 21 AG area and cover situation at Kedleston and Forest Moor; Col Winterbotham at 1 SIC to AD (2) Mar 22 re printer cover and involvement of Capt Gordon from BP, Winterbotham to AD (2) Mar 24 re V1 strike 50 yds from 2 GE site, 8 operators and Capt Gordon in hospital, printer setroom worst affected, Wallace replies Mar 24, Gordon expected UK about Mar 27, update from Winterbotham to Wallace on damage and casualties Mar 24, Wallace to Winterbotham Mar 25, replacement sets being sent out, instructions for future, Winterbotham to Wallace Mar 25, Gordon to be in UK Mar 27, only 2 of 4 damaged sets need replacing; Brown to DD 1 Mar 22 re proposed moves of 1 SIC elements, exchanges between Brown and Lt Col Gadd at BP on forward deployment of Sigint elements Mar 26-28; Brown to Major Webster at BP re Brown's signal to DD 1 of Mar 7 requesting permission to indoctrinate all 1 SIC officers, no reply to date; Maj Gen Strong to C and Col Taylor with proposed new order for all senior intelligence officers in SHAEF re use of scrambler telephone to pass Ultra, previous order forbidding passing of Ultra, by phone to be relaxed; Wing Cdr Crawshaw appointed Anglo-American Ultra Security Officer for W Theatre Mar 23, to operate from SLU 8 at SHAEF Forward, Crawshaw to Jones at BP Mar 30 re indoctrination of Brig from 1st Allied Airborne Brigade, briefing carried out by COS Gen Parkes; AS to Air Staff SHAEF Forward Mar 27 re one-time pads; Gens Strong and Betts at SHAEF to C Mar 27 re vulnerability of Chinese Military Attache codes from Paris and release of Sigint to Chinese, system to be tightened up, French possible source of intelligence to Chinese; Brown at 1 SIC to DD 1 Mar 19 re French officers visiting 6th AG and whether they could be permitted to see GAF c/s book, DD 1 replies only if stressed that book was captured document and not one produced by analysis at BP, Scott agrees to follow BP line Mar 20 and would visit BP shortly; various UK liaison with US during period; Admiral Morgan of Admiralty to Admiral Redman of US Navy thanking him for invitation to Cdr Hughes RN to visit OP-20-G and suggesting that visit should coincide with that of EWT and Hinsley in May; Major JR Cheadle detached to SSA in Washington to EWT Mar 16 covering 24 page report of Jan 1945 on US handling of Japanese commercial traffic, minutes of meeting at Arlington Hall Mar 27 to discuss proposal from DD (C) at Berkeley St for handling Japanese commercial traffic, strong case put forward for DOE; amendments dated Mar 16 to Col O'Connor's Mar 3 list of Ultra cleared personnel in JSM Washington, sent to BP for Chairman SB; SLU Washington to BP Mar 17 re list of captured Jap documents from COM 7 Fleet, documents en route to FRUPAC, copies of captured docs being sent to BP Mar 31; DD 1 to O'Connor Mar 19 re possible breach of Ultra rules by US; DD 1 to Col Bicher of ETOUSA SHAEF Mar 31 with details of bulky special equipment 5202 being despatched by Corderman in Washington to BP together with maintenance staff, ETOUSA to make official request to Washington on behalf of BP for this equipment; further technical exchanges between Foss and Alexander in BP NS and Bodsworth in OP-20-G; OP-20-G informs BP that Cdr Barham leaving by air Mar 20; SLU Washington of BP Mar 23 with US request for additional copies of BP NS EP; Lt Cdr Chalkley RN, detached to OP-20-G, to BP Mar 24 re working aids for BP from OP-20-G; EWT en route from BP to FE, DD 1 to EWT via SLU in New Delhi Mar 20 re possible breach of Naval Ultra by G 2 in Washington in report on results of Allied air minelaying, UK to raise no protest in Washington, DD 1 informs Melbourne that EWT may visit during tour, DD 1 again to EWT in Delhi Mar 21 re FRUEF signal, DD 1 to EWT, now at HMS Anderson, Colombo, Mar 23 re O'Connor's reply to previous signals on possible Ultra compromise in US EP, no British action called for; DNI visiting Colombo with EWT, to DDNI from Colombo Mar 27 re Naval staff appointments and promotions; various exchanges between BP and HMS Anderson, Colombo; Melbourne to all BRUSA stations Mar 19 re FR

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